The 106 track is under new management and is far better off then it was when it was Thundermax. It is more of a supercross track as it has lots of jumps and rhythm sections. It's a fun track for beginners or experienced riders alike.
I guess the only complaint I can think of is that the track gets hard and slick as it's hard to groom. Also, they need to set up a better watering system.
The new owners are hard at it at making this track better and better and time will fix all problems, I am sure. They really want your opinion on the track and are willing to listen and maybe make changes if it's a great idea. The track flows and is fun and if you like jumps, they got'em for you. I would rate this track as a good track. No track every get's a ten in my book but they are up there.
Yes there are actual bathrooms there and every time I have been in them, everyone has been doing their part to keep them clean. No trash lying around either.